Eliminating-key for adding-machines.



G. N. MOFARLAND.

ELIMINATING KEY FOR ADDING MACHINES. APPLICATION TILED SEPT. 20, 1906,

1,024,01 3, Patented Apr. 23, 1.912.,

2 SHEETS-SHBET L A ttest n In ventor:

C. N. l\I(1PARL1IIDx ELIMINATING KEY FOR ADDING MACHINES APPLIUATION IILED SEPT. 20, 190B.

Patented Apr. 23, 1912.

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Inventor: m N- 7% Mound,

UNITED STATES} PATENT OFFICE.

CHikB-LES 11.,MGI1ARLANI3, OF KINGSTON, PENNSYLVANIA, ASSIGNOR TO THE ADDER MACHINE COMPANY, OF KINGSTON, PENNSYLVANIA, A CORPORATION OF PENN- Patentcd Apr. 23, 1912.

SYLVANIA.

' ELIMINATINGWKEY FOE ADDINGJYKACHINES.

1 324,013, Bpcifination 05 Letters Patent.

Application iiiea September 20, 1906. Serial No. 335,357.

To all 2 mm may concern:

Bo Limo, a citizen of tho United States, residing at. Kingston, in the county of lnuzerno and. State of Pennsylvania, havo invented certain new and usciul Improvements in Eliminuting-Kcy r Adding-Machines, of which tho .ollowii' J is a specification.

My invention relates to adding machines its object to provide means entirely 10 and unto]? the control of the operator whcrehy the mechanism for accumulating the items to he added and recorded may be utilized to record a. number without accmnulating it into the tota l. of the otheritems enumerated. Machines oi this class ,havo' reached a high degree of perfection; and org accuratc and.

1 liablo. They commonly comprise registe ng mechanism, accumulating and recording or printing mechunisn'i, and the usual. operation is to set. up the items on keys, and then by the movement a handle or the vibration of a shaft. set in motion trains of l'i'iechanism whereby the items so set up arc recorded and accumulated and finally through other nieelianism, a total is detonmined and recorded. There are a variety of other functions performed by the (litlen ent mechzuiisnis. out the above is their main giurpose. it. is convenient. at limos to print in conn ction with tho ilcms enumerated a. nuinhor, 'l :si jjliz\ting for instancc the number of a, chock or its date. I havo providod inmrovud moans called an eliminating or non-adding hoy wlioreliy the tuna lion of tho :wmunulating nweluuiism is inltii'llilittl without ctl'erling the functions ol' 'ihc other mechanism. l also provide means. tor rosioring this function or litfiplllg it in terruplcd at will.

in ordor to explain tho invention 1 shal (osn-iho it in'connection with tho relate ,lil. issued ring. l5, i905 and No. 71 li-mllitl July ll, 1905, to Cl arlos Walt-s a retor to tho e patunts for a particular description o .ie ll'ltELillil'tllSlll not directly involved her:

In the drawing there is shown in l igiu'e l a, Fido olevntion and it-artiol vortioal sec tion oil that, portitm of an adding in hine onihodying in .nvonlion. Fig. in a. simi lur view illuseirating SORIlOttflilG parts shown litlOi'v'lt that I, CnAnLns X. lllclliat an adding machine and I have sethai purpose the B'HHlHhQ which i in Fig. l and other parts, including the keys Fig. 3 is a dotail transverse tional viow, broken out in the middle,'unowing the numeral wheels in elevation. i

The registering mechanism consists of a hunk of keys arranged in denominational series, as at 80, each key provided with a stem 81 by the depression of which a. stop, as at corresponding to the. numeral value of the. hey depressed, is interposed in the path of rack bars described in the Vales patents above referred to.

In the drawing the rack bars are designated 9.0. These are each p'rovided with toothed racks 21 on their upper edges and are supported at their front ends upon links 22 suitably pivoted, and at their rear ends upon. the extremities of hell crank leversZS mounted to oscillate upon a shaft 2 1. The other ends of the bell cranks are pivotally connected to the printing mechanism. Therack bars are adaptcd to mesh with pinions with which the numeral Wheels 31 are provided. These numeral Wheels display the digits in proper order on their edges, (not shown) and are all mounted on a common shaft 32, there being one wheel for each denominational. series of keys. It is readily seen that when the rack bars 20 are moved forward, and the racks are in me 1 with the pinions 30, that the extent of rotation of the wheels is determined by the extent of the n'iovcmcnt of the racks, which in turn in governed by the position of the stops above referred to and which is perinanontly controlled by a series of permauont stops provided for that. purpose one of which is; seen at main shaft 40 is adapted to vibrate eithcr by a handle manually operated or from a suitable source of power. This oseillates a sector -'.'1 provided with ,a leg 1-2 whit-h in turn, through a pin 42), moves a train of i'nechanism whereby the racks 20 are moved and through them movement is communicated to the printing mochanismp This latter comprises a series of type bars arranged in vertical order on a carrier 51 so that, wlun a rack is moved, its type bar is missed until the type carrying the number corresponding to the extentof its movement opposite the point of print. This point of print is in a fixed horizontal plane and is opposite the shaft 52 of the.

and connecting mechanism.

platen 53 which in turn is mounted upon a carriage 54: adapted to move laterally in the machine. It will be understood of course that suitable means are provided to ink the 5 type and propel forward the paper and to move the parts in harmony to perform their functions.

The accumulating mechanism is not shown complete in the drawing. It is fully den scribed in the patents of Wales referred to.

lit comprises carrying mechanism whereby when a number greater than 9 is accumulated. on one numeral. wheel it is suitably transferred to the wheei of next higher denomination and Zero restoring mechanism, whereby the parts are all replaced in their initial position when the adding operation has taken place.

'All of the parts so for described form no o part specifically of my invention.

At each side of the frame work of the machine, at a. convenient place, a lever is pivoted on a shaft or pivotfil. They are of the bell crank type. One arm'62 is hinged to a stem 53 of a key 64 provided with a. finger piece 65 projecting above the case of the machine. Another arm 66 is provided. at its lower extremity with a hook or projection'SZ adapted to swing under the numoral wheel shaft 32 to support it. A spring 68 serves normally to pull the arm 66 away from the numeral wheel shaft. The key stem 63 is provided with fin 69 ada ted to engage with the under side of the-p ate 70 apertured at 71 to permit of the passage of the key stem, 63 and which plate is secured to the frame of the machine by screws 72, 2'2 or in some other suitable manner. Now. it must be remembered that no accumulation of an item registered by theuey will take place unless the numeral wheels are rotated. This rotation, as has been seen, is accomplished by the engagement of the rack bars 20 with the pinions 30. It is obvious, how- 5 ever, that even if these rack bars 20 do notengage with these pinions, when an item has been set on the keys and the main shaft 40 is oscillated, that all other parts will perform their functions. The rack bars will swing to an extent determined by the position of the stops limiting their movements and the item enumerated will be printed upon the roll hr platen, but the item will not be accumulated. The engagement between the rack bars and the numeral wheel pinions I prevent by depressing the key 64. This swings the bell crank lever 60 until the hook 67 comes beneath the shzift-32. So long as this condition exists, the numeral Wheel pinion cannot engage with the rack bars. I may look the Key in this position by pressing the in or shoulder 69 l eneath the edge of the plate 70 and so long as it stays locked, the items enumerated are registered and D printed but not accumulated. The key is released simply by moving it so that the tin 69 is removed from beneath the edge of the plate 70 when the spring 68 retracts it to position and the hook 67 is moved away from the numeral wheel shaft and no longer supports it and thereafter the items registered are accumulated until the key 6t is again manipulated. I call this key an eliminating or non-adding key because it. temporarily eliminates or interrupts the function of the accumulating mechanlsm, and when depressed the accumulating mechanism cannot add.

\Vhat I claim as new is:

1. In a machine of the class described, comprisin racks, numeral Wheels, each provided wit. a inion adapted to engage a. rack, and a epressible eliminating key, adapted by its depression directly to hold the pinions out of engagement with their respective racks.

2. In a machine of the class described, comprisipg racks, numeral wheels, each provided with a rack, a depressible eliminating key adapted by its depression directly to hold the pinions out of engagement with their respective racks, and means for elevating said key to permit the pinions to be loweredinto engagement.

35in a machine of the class described, comprisin racks, numeral wheels, each provided wit a inion adapted to engage a rack, a depressible eliminatin key adapted by its depression directly to %10ltl the pinions out of engagement with their respective racks, and means for holding said key depressed.

4. In machine of the class described, comprising racks, numeral wheels, each provided with a pinion adapted to engage arack, a depressible eliminating key, adapted by its depression directly to hold the pinions out of engagement with, their respective racks, and means for holding the key dc pressed or elevated at will.

In a machine of the class described, comprising racks, numeral wheels, each provided with a pinion adapted to engage a rack, the combination therewith of means adapted directly to hold the pinions out of engagement with racks, and a depressible key attached to said means.

6.. In a machine of the class described, comprising racks, numeral wheels, each provided with a. pinion adapted to engage a rack but normallyout of engagement therewith, a key, and a hook operated thereby and which is adapted to engage the numeral wheel shaft and hold the numeral wheels out of engagement with their racks, when the key is hold depressed.

7. In on adding machine comprising nu-' moral wheels provided with pinions, racks by which they are moved, a main shaft,

inion adapted to engage a means connected to the key whereby the pile ions are restrained from such engagement;

during the entire stroke of the main shaft.

8. In an adding machine eomprisinp. numeral wheels provided with pinions, racks by which they are moved, a main shaft, means adapted to move the racks therefrom, means normally keeping the pinions outof engagement with the racks during; the forward strokeof the shaft and in such engagenient't'luring the rearward stroke of the same shaft, in combination with mains operated from a key whereby the pinions are restrained from such engagement during the entire stroke of the main shaft consisting of a frame. levers rocked therefrom and hooks on the levers'adapted to be moved into position to prevent the movement of the pmions.

t). in an adding machine, numeralwheels arranged in denominational series, a common shafton which they are all mounted, pinions one adjacent to each wheel on the ronnnon shaft, a series of racks arrz'inged beneath the pinions, means adapted to move the shaft tlownward to bring the pinions into engagement with their racks,akegand moans operated by the he adapted directly to prevent such migaggemcnt,

it). in an adding machinln numeral wheels arranged in denominationat series, a eom nion haft on which they are all mounted. pinions one adjaernt to each wheel on the common shaft. a series of raeks arrangtal beneath the pinions, means adapted to move. the shaft. downward to hiking the. pinions into engagement with their racks, and means operated by a key adapted to prevent such engagement. conn-irising an oscillating frame n'ioved from the he and devices thereon :nlapted to be moved thmretrom into the downward path of the shaft to intercept its movement.

11. In an adding machine,numeral wheels arranged in denominational series, a. common shaft on which they are monntechpinions one adjacent to each wheel on the oom mon shaft, a series of racks arranged heneath the pinions, means ,adapted to move the shaft downward to bring the pinions into engagement with their racks, and means pp'erat'edhy a key adapted to prevent such engagement comprising an oscillating frame lr'noved from the key and a plurality of levers moved therefrom eaeh provided with a hook adapted to move beneath the shaft when the hey is depressed.

12. In an adding machine, comprising nnmeral wheels provided with pinions, arms swinging on pivots, racks carried by said arms and adapted to engage the pinions, main shaft,- means adapted to move the racks therefrom, means normally keeping, the pinions out oi. engagement with the racks dar ing the forwariil stroke of the shaft and moved into sneh engagementdnring the rearward stroke of the same shaft, in combination with means operated from-a key whereby the pinions are restrained from such engagementduring the entire stroke of the main shaft.

13. In an addiin;- machine, comprising numeral wheels provided. with pinions; racks by which they are moved, an extension on one of said swinging arms, a printingmeehanisni operated l) "t' said extension, a main r-ihat't. means adapted to move the racks therefrom, means normally keepingthe pinions out of engagement with theracks during the forward stroke of the shaft and in sneh engagement during the rearward stroke of the same shaft, in eoml'iination with means operated from a key whereby the pinions are restrained from sin-h engagennmt during the entire'stroke of the main shaft.

in testimony whereof I afiix my signature 'in presence of two witnesses.

mini-Les inerxiinianio. 

